This episode goes behind the scenes of CountrycideBehind-the-scenes look at the sci-fi drama series. Writer and co-producer Chris Chibnall talks about how the storyline of this sinister episode shapes the series, and backstage cameras follow the filming of some of the show's most complex scenes. Neill Gorton and his design teams reveal the secrets behind the special effects that created the bloodiest episode of the series so far.Synopsis Source: Doctor Who Guide